A blackbody is an ideal system that a) absorbs \(100 \%\) of the light incident upon it, but cannot emit light of its own. b) emits \(100 \%\) of the light it generates, but cannot absorb radiation of its own. c) either absorbs \(100 \%\) of the light incident upon it, or emits \(100 \%\) of the radiation it generates. d) absorbs \(50 \%\) of the light incident upon it, and emits \(50 \%\) of the radiation it generates. e) blackens completely any body that comes in contact with it

Short Answer

Expert verified
Answer: The properties of a blackbody include both absorbing 100% of the light incident upon it and emitting 100% of the radiation it generates.

Step by step solution

01

Definition of a Blackbody

A blackbody is an idealized system that absorbs 100% of the electromagnetic radiation incident upon it and emits radiation according to its temperature. This means it can both absorb and emit radiation, and its emitted spectrum depends on its temperature. Now let's analyze each option to identify the correct one.
02

Option a)

This option suggests that a blackbody absorbs 100% of the light incident upon it but cannot emit light. This is incorrect as a blackbody also emits radiation according to its temperature.
03

Option b)

This option suggests that a blackbody emits 100% of the light it generates but cannot absorb radiation. This is incorrect as a blackbody also absorbs 100% of the radiation incident upon it.
04

Option c)

This option suggests that a blackbody either absorbs 100% of the light incident upon it or emits 100% of the radiation it generates. This is the correct definition as it accounts for both absorption and emission characteristics of a blackbody.
05

Option d)

This option suggests that a blackbody absorbs only 50% of the light incident upon it and emits 50% of the radiation it generates. This is incorrect as a blackbody absorbs 100% of the incident radiation and emits radiation according to its temperature.
06

Option e)

This option suggests that a blackbody blackens completely any body that comes in contact with it. This is incorrect as blackening of objects has nothing to do with the blackbody properties related to radiation absorption and emission. Therefore, based on our analysis, the correct answer is:
07

Conclusion

The properties of a blackbody include both absorbing 100% of the light incident upon it and emitting 100% of the radiation it generates. So the answer is: c) either absorbs 100% of the light incident upon it, or emits 100% of the radiation it generates.

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